Wiring a G203V

[Hack]

I am working on a new cnc mill. It is a RF31 Clone that I bought from wholesale tool a few years ago, but the new part is the CNC. Due to the cold in the shop this time of year I am taking some indoor time and wiring up a new controller this weekend in my home office. Sure beats the 14 degrees outside.

I am using 3 G203V's, a CNC4PC breakoutboard (the C10), and a 48 watt power suppply from Keling. I am also using an independent 5V supply that I got from MPJA.

On the geckos I have:

Pins 1 and 2 of the geckos to the 48 volts of the power supply,

Pins 3- 6 to the stepper motors

Pin 7 is empty

Pin 8 & 9 to the breakout board for step and direction. These are wired to pins 2&3 for x, 3&4 for y, and 5&6 for z.

What do I do with pin 10 (common)? I am almost positive that this should be a +5v supply. Is this correct? If so, should I get this from the +5V coming off the 5 v power supply or can I also get it from common connections on the BOB?

Pins 11 and 12 I have open as my motors are rated at 7 amps

Please double check my thinking and verify that I have all pins correct. Also let me know if I am correct in my thinking for pin 10 of the gecko.

Thanks all.

Dan

[Crevice Reamer]

Hi Dan. It all sounds good, except:

Gecko 201s need a +5V. The G203Vs (Or the G540) want a GROUND on COM. Set your COM jumper on the C10 to jumper pins 1 and 2. Then attach the 203V pin 10 to any COM terminal on the C10.

Step and direction should be wired to pins 2 & 3 for X, 4 & 5 for Y, and 6 & 7 for Z.

If you are using three 7A motors, your power supply must provide at least 13A. What stepper motors are you using?

Terminal # 1 is the Power ground, and # 2 is Positive. Make sure you don't reverse these, or allow any strands of wire to short between--Or you could KILL the unkillable 203V.

CR.

[Crevice Reamer]

I just remembered something that I meant to say in previous post:

Are you attaching the G203s to a heat sink?

G203Vs require a heat sink to operate on more than 3A.

CR.

[Hack]

That is easy enough. Can anyone confirm this just to be sure?

Thanks for the note about the heatsink. I had not itended to do this, but I will make provisions for this before I am done.

Dan

[Torchhead]

Confirmed as to the polarity of G203V COM (ref to PCGND). Also the drive signals to the Step (from your BOB) have to be Active Step HIGH (Red X in MACH).

TOM CAUDLE
www.CandCNC.com
Totally Modular CNC Electronics

[phungi]

I run almost the same spec, 42v 7amps c11g.
Confirming Heatsinks and decent airflow are needed at 7amps.
Wiring advice is correct also.

[carlosescuela]

Hi Dan. It all sounds good, except:

Gecko 201s need a +5V. The G203Vs (Or the G540) want a GROUND on COM. Set your COM jumper on the C10 to jumper pins 1 and 2. Then attach the 203V pin 10 to any COM terminal on the C10.

Step and direction should be wired to pins 2 & 3 for X, 4 & 5 for Y, and 6 & 7 for Z.

If you are using three 7A motors, your power supply must provide at least 13A. What stepper motors are you using?

Terminal # 1 is the Power ground, and # 2 is Positive. Make sure you don't reverse these, or allow any strands of wire to short between--Or you could KILL the unkillable 203V.

CR.

hi, i am using a CNC4PC breakoutboard (the C10) too, but i have two (2) g201 and one (1) g203v! i have wired the term.10 of the g201 to the common pin of the c10. how can i do with the 203v? thanks a lot!